from pathlib import Path

from config import STORAGE_DIR, PROJECTS_DIR

THEMEN_DIR = STORAGE_DIR / "themen"


def _safe(name: str) -> str:
    return name.replace("/", "_").replace("\x00", "")


def topic_dir(topic: str) -> Path:
    return THEMEN_DIR / _safe(topic)


def arbeit_dir(topic: str) -> Path:
    return topic_dir(topic) / "arbeit"


def bausteine_path(topic: str) -> Path:
    return topic_dir(topic) / "bausteine.md"


def guide_content_path(topic: str, format_name: str) -> Path:
    return topic_dir(topic) / "guides" / f"{format_name}.json"


def bausteine_topics() -> list[str]:
    """Themen, für die ein Themen-Ordner existiert."""
    if not THEMEN_DIR.is_dir():
        return []
    return [d.name for d in THEMEN_DIR.iterdir() if d.is_dir()]


def project_dir(name: str) -> Path:
    return PROJECTS_DIR / name